When a company sees an opportunity to charge more, it takes it. That's why you'll often find the same product marketed differently for more or less money. If you want to save on an expensive item, however, you just need to find its cheaper clone.

Personal finance and frugal living blog Wisebread points out a number of market clones that you can save your money on. Here's one particularly ridiculous item:

Excedrin Migraine and Excedrin Extra Strength are exactly the same product except that Excedrin Migraine costs a dollar or more per 24 caplet bottle. Again, generics can save you even more.

The same goes for diphenhydramine when marketed as a sleeping agent. Benadryl is the same thing and often times you'll find it in bulk for less money than a 12-pack of the "sleeping pill" version. The moral of the story is simple: if you find something that seems overpriced and/or seems like it could have multiple uses, find out if there's a cheaper option. Many times there is. For more examples, hit up the post over at Wisebread.